Determination of total phenolics, flavonoids, and testing of antioxidant and antibacterial activities of red ginger ( var. Rubrum).

Objective: The purpose of this study was to select the active fraction of red ginger for its antioxidant and antibacterial activities against (AMC 6934), (AMC 7923), (AMC 8973), and (AMC 5761).

Materials And Methods: A total of 2 kg of dry red ginger rhizome powder was macerated in stages with different levels of solvent polarity to extract the chemical composition within the red ginger powder sample. The extraction process begins with a non-polar solvent (n-hexane) by soaking the red ginger powder sample for 3 × 24 h.

Antioxidant and antibacterial activities of the rhizome extract of extracted using some organic solvents.

Objective: This research aims to identify the effect of various organic solvents such as n-hexane, ethyl acetate (EtOAc), and methanol (MeOH) on the antioxidant and antibacterial activities of extract, against three Gram-positive bacteria, namely and , and three Gram-negative bacteria, namely and .

Materials And Methods: As much as 1 kg of white turmeric rhizome () was extracted two times for 24 h using 3 l of MeOH before evaporating. The extract was then fractionated using n-hexane six times per 2 h, with each volume of 500 ml, and continued with the EtOAc fractionation.

Determination of nutrient content, β-carotene, and antioxidant activity of extraction using organic solution.

Objective: The research was conducted to determine β-carotene and antioxidant activities and screening of phytochemical substances of extraction using organic solution.

Materials And Methods: 550 gm of M. oliefera leaf flour was macerated.